Welcome to Riverwalk OBGYN

Overall patient rating:

In 1979 Tristan Castaneda, MD started with a simple premise: Make available to every woman the health resources she needs to live a healthy, active, and long life. At the same time, educate each woman about the importance of preventative health measures. This same idea still drives us today, some 30 years later. The track record we’ve accumulated over the years speaks to our commitment to patients, their families, and the community at large. Both our medical and office staffs are second to none, who genuinely take an interest in individual patient’s needs. We think you’ll notice the difference immediately when you step foot inside our doors. We’d love to see you today to map out a health and wellness plan that’s tailored to your health history and needs.

About Our Practice

  • Providers

  • Services

  • Links And Forms

  • Locations

  • Contact Us

  • Alka Arya Degaetano

    DO
  • Ricardo Munoz

    MD
  • Stephanie Schaefer

    MD
  • Christina Simpson

    MD
  • Heather Williams

    MD

We Provide The Following Services

  • Obstetrics + Reproduction
  • Pregnancy Care and Delivery
  • Contraception
  • Ultrasound and Imaging
  • Gynecology + Wellness
  • Annual Exams
  • Menopause
  • Urogynecology

Riverwalk OBGYN: San Antonio Office

  • Monday: 8:30AM - 5:30PM
  • Tuesday: 8:30AM - 5:30PM
  • Wednesday: 8:30AM - 5:30PM
  • Thursday: 8:30AM - 5:30PM
  • Friday: 8:30AM - 5:30PM

Send Us a Message

    Patient Reviews

    Overall patient rating for Riverwalk OBGYN:

    Biopsy

    The procedure was clearly explained, staff was friendly and helpful, my doctor was empathetic and highly competent.

    Annual Well Woman Exam

    She listens, she educates and remedies my concerns.I don’t feel I am just an insurance code and a number to this doctor

    Annual Well Woman Exam

    Dr. Schaefer is a thorough physician and I appreciate her care and concern during each appointment.

    Annual Well Woman Exam

    From the staff at the front desk, the nurse and Dr Schaefer were very helpful, friendly and thoughtful!

    Annual Well Woman Exam

    I love and trust my doctor and I feel very comfortable with her. Office staff is also great.

    Pap Smear

    I was seen in a a timely manner. Dr. Harville was extremely kind and made me feel heard when I had many questions.

    OB Care

    Dr Arya is always great and a good listener and follow through

    Annual Well Woman Exam

    Polite staff and Dr Munoz always takes time to talk and see if there are any concerns or issues. He takes time with each patient

    Advanced Laparoscopic Surgery

    Dr. Munoz and his team are great. Toni helped schedule my surgery and my surgery went smooth.i got to meet Ms. Cavarria on the day of my surgery and was delighted to have her as part of my care team. I am very happy with the care they give me.

    Pap Smear

    Thank you Dr. Munoz for being the best obgyn since I was 17yrs & delivering my 2 kids . Your & Anna are the BEST!!